A feed screen's state: the cursor the page after the first is requested with
— the first page's cursor continued by its answer, as the feed's cursor
derives it — absent when the server said no page follows, and the facts the
feed carries beside it from its input (its host), which its items read as
their host's state (facts, present exactly when the feed declares a host).
Without such facts the state is only the cursor.
A feed screen's state: the cursor the page after the first is requested with — the first page's cursor continued by its answer, as the feed's
cursorderives it — absent when the server said no page follows, and the facts the feed carries beside it from its input (itshost), which its items read as their host's state (facts, present exactly when the feed declares ahost). Without such facts the state is only the cursor.